Blurry Screen, Unreadable text, low resolution, Laggy

Prerequisites

I am using Ubuntu. I only need to duplicate the screen and thats it Everything was fine in my tablet the problems started popping Low resolution, let me guess 720p or something\

Text is supper blurry, kind of makes me use my tablet, but the resolution in my tablet is very high, I don't know around, 2560x1440

Super laggy like around 5 seconds behind from my ubuntu laptop. I tried using fluffy display, increase my resolution on the mac to 1920x1440p. still super blurry, is there any way like you could manually connect it to hdmi ports so there's no lag?

I'm hitting this delay too. Has there been any progress on this front?

I suspect it's a band with issue.